Structure-Dependent Electrical, Optical and Magnetic Properties of Mn-Doped BiFeO3 Thin Films Prepared by the Sol-Gel Process

Thin films nanoparticles TbxY3-xFe5O12 (x=0.0, 1.0, 2.0) were prepared by the sol-gel process followed by annealing process at various annealing temperatures of 700° C, 800° C and 900° C in air for 2 h. The results obtained from X-ray diffractometer (XRD) show that the films annealed below 900°C exhibit peaks of garnet mixed with small amounts of YFeO3 and Fe2O3. Pure garnet phase has been detected in the films annealed at 900°C. Before annealing the films show amorphous structures. The particles sizes measurement using the field emission scanning electron microscope (FE-SEM) showed that the particles sizes increased as the annealing temperature increased. The magnetic properties were measured at room temperature using the vibrating sample magnetometer (VSM). The saturation magnetization (Ms) of the films also increased with the annealing temperature. However, different behavior of coercivity (Hc) has been observed as the annealing temperature was increased.

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Electrical and Magnetic Properties of Multiferroic $(1\hbox{-}{\rm x})\ {\hbox{BiFeO}}_{3}\hbox{-}{\rm x}\ {\hbox{CoFe}}_{2}{\hbox{O}}_{4}$ Nanocomposite Thin Films Derived by Sol-gel Process

IEEE Transactions on Magnetics ◽

10.1109/tmag.2013.2278714 ◽

2014 ◽

Vol 50 (1) ◽

pp. 1-4 ◽

Cited By ~ 7

Author(s):

Mintu Tyagi ◽

Mukesh Kumari ◽

Ratnamala Chatterjee ◽

An-Cheng Sun ◽

Puneet Sharma

Keyword(s):

Thin Films ◽

Magnetic Properties ◽

Sol Gel ◽

Electrical And Magnetic Properties ◽

Sol Gel Process ◽

Nanocomposite Thin Films

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Optical and magnetic properties of Mn doped ZnO thin films grown by SILAR method

Journal of Materials Science Materials in Electronics ◽

10.1007/s10854-012-1012-2 ◽

2012 ◽

Vol 24 (6) ◽

pp. 1782-1787 ◽

Cited By ~ 6

Author(s):

S. Balamurali ◽

R. Chandramohan ◽

N. Suriyamurthy ◽

P. Parameswaran ◽

M. Karunakaran ◽

...

Keyword(s):

Thin Films ◽

Magnetic Properties ◽

Zno Thin Films ◽

Silar Method ◽

Optical And Magnetic Properties ◽

Doped Zno ◽

Mn Doped

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Enhanced Magnetic Properties of BiFeO3 Thin Films by Doping: Analysis of Structure and Morphology

Nanomaterials ◽

10.3390/nano8090711 ◽

2018 ◽

Vol 8 (9) ◽

pp. 711 ◽

Cited By ~ 32

Author(s):

Yilin Zhang ◽

Yuhan Wang ◽

Ji Qi ◽

Yu Tian ◽

Mingjie Sun ◽

...

Keyword(s):

Thin Films ◽

Magnetic Properties ◽

Sol Gel ◽

Exchange Interactions ◽

Ferromagnetic Behavior ◽

Ferromagnetic Properties ◽

Structure And Morphology ◽

Related Diversification ◽

Lattice Distortions ◽

Mn Doped

The improvement of ferromagnetic properties is critical for the practical application of multiferroic materials, to be exact, BiFeO3 (BFO). Herein, we have investigated the evolution in the structure and morphology of Ho or/and Mn-doped thin films and the related diversification in ferromagnetic behavior. BFO, Bi0.95Ho0.05FeO3 (BHFO), BiFe0.95Mn0.05O3 (BFMO) and Bi0.95Ho0.05Fe0.95Mn0.05O3 (BHFMO) thin films are synthesized via the conventional sol-gel method. Density, size and phase structure are crucial to optimize the ferromagnetic properties. Specifically, under the applied magnetic field of 10 kOe, BHFO and BFMO thin films can produce obvious magnetic properties during magnetization and, additionally, doping with Ho and Mn (BHFMO) can achieve better magnetic properties. This enhancement is attributed to the lattice distortions caused by the ionic sizes difference between the doping agent and the host, the generation of the new exchange interactions and the inhibition of the antiferromagnetic spiral modulated spin structure. This study provides key insights of understanding the tunable ferromagnetic properties of co-doped BFO.

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